What makes Comodo a leading certification autority? a quick google query revealed at least one more "leading" authority - and i assume there can be only one "leader"... so what is the truth?
PS these claims always made me laugh actually, some time ago i queried some software site for antivirus and was surprised by the amount of anti-virus software existing... Most of them were fake AV's and every single fake one had a "leading anti-virus provider" claim on their web site :-))))
We are the ones who initiate new standards for the future of Certification authorities (eg:
www.cabforum.com was my initiatiave that i started) and we are the ones who continually innovate new products/methods to improve and we are the guys who tries to make all this as affordable as possible for the masses.
Hope this was a good enough answer

cheers
Melih